pop up issues

We are using Woodmart v.7.4.3 theme for wordpress v.6.4.3 for wooCommerce. we enabled Pop-up for 10% Discount by newsletter submition using one HTML block.
We set it show pop-up after visiting second page. It’s work as well but when you submit your email in pop-up subscription field and click on the submit, no approval message or email coming and pop-up close and after seconds the popup will sho back again. this pop up never close! also we got several spam registration by robots after activating the pop-up.
My questions are:
1.⁠ ⁠how we can make sure don’t let to submit spam registration by online robots?
2.⁠ ⁠how we can make sure the email submited by user? for example sending an email to us and client also.
3.⁠ ⁠how we can close pop-up after submition? because it’s back after submition!